CN102720629B - Wave energy conversion apparatus and system thereof - Google Patents

Abstract

A wave energy conversion device and its system, the wave energy conversion system includes at least one wave energy conversion device, a column vertically installed and fixed in waves, and at least one fixed arm for fixing the wave energy conversion device. The wave energy conversion device includes: a buoy that can move up and down with the waves and a cylinder-type compressed air generating mechanism connected with the buoy. The compressed air generating mechanism includes: a cylinder that can move up and down with the buoy body and a relatively fixed vertical rod, the vertical rod and the cylinder body enclose at least one airtight chamber, each airtight chamber is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet check valve, and the air outlet There is an air outlet check valve at the air port, and the cylinder body is fixedly connected with the buoyancy tank. The up and down movement of the buoyancy tank with the wave undulation can drive the cylinder body to move up and down relative to the vertical rod to convert the energy generated by the wave undulation into compressed air. The wave energy conversion device and the wave energy conversion system have simple structure, good corrosion resistance and high working efficiency.

Description

Wave energy conversion device and its system

technical field

The invention relates to a technology for developing and utilizing ocean wave energy, in particular to a device for converting ocean wave energy into compressed air and a system for converting ocean wave energy into electrical energy.

Background technique

As a major energy producer in the world, China is also a major energy consumer. The energy consumption per 10,000 yuan of GDP is three times that of the world's average level. Therefore, energy conservation has become the theme of China's current social development. As we all know, ocean energy is a green, clean, zero-pollution emission renewable energy, and its development and utilization have broad prospects for development. As a kind of ocean energy, wave energy refers to the kinetic energy and potential energy of waves on the ocean surface. It has the advantages of high energy density and wide distribution. energy. Since the oil crisis in the 1970s, countries began to shift their attention to using local resources and finding suitable and cheap energy sources. The ocean is the cradle of human beings. 75% of the earth is covered by oceans. It has become an inevitable trend for human beings to seek resources from the ocean. Wave power generation is the fastest-growing form of marine energy utilization after tidal power generation. Over the past 100 years, scientists from various countries have proposed hundreds of ideas and invented various wave power generation devices.

The Chinese invention patent with the application number 200910151340.3 and the application date of June 27, 2009 discloses a method for converting ocean wave energy into electrical energy by using a buoyant air compressor, which generates compressed air through N buoyant air compressors. Then, the compressed air generated by all the compressors is transported to the compressed air storage tank on the shore through the gas collection pipeline, which supplies the gas turbine to work and drives the generator to generate electricity, thus completing the conversion process from ocean wave energy to electrical energy. Although this method is feasible in principle, the compressed air needs to be concentrated through multiple pipelines and transported over a long distance to reach the gas storage tank on the shore for the gas turbine to work. This method has low reliability because the device is disabled and cannot work.

The Chinese invention patent with the application number 200910161430.0 and the application date of June 27, 2009 discloses a buoyant tank direct-supply air compressor that converts wave energy into mechanical energy, which mainly includes: buoyant tanks, springs, cylinders, connecting rods, Pistons, plugs, etc., when the sea level at the buoyant tank is at the crest position, the buoyant tank moves up, and the piston rod pushes the piston upward to generate compressed air. When the sea level at the buoyant tank is at the wave trough position, the buoyant tank is Moving down, the piston rod is driven by the buoyancy tank to move down, at this time the plug on the piston is opened, and the external air enters the cylinder to wait for the next compression. The buoyant tank direct supply type air compressor has a complicated structure, low energy conversion efficiency, and seawater is easy to rise above the buoyant tank to corrode springs, connecting rods, pistons and cylinders, etc., so its practicability is not high.

It can be seen that the technology of using wave energy to generate electricity in the prior art generally has defects such as low reliability and low power generation efficiency, and cannot be widely used.

Contents of the invention

The first technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a device for converting ocean wave energy into compressed air. The wave energy conversion device has simple structure, good corrosion resistance and high working efficiency.

The second technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a device for converting ocean wave energy into compressed air, mechanical energy or electric energy, which has simple structure, high reliability and high working efficiency.

In order to solve the above-mentioned first technical problem, the present invention provides a wave energy conversion device, comprising: a buoyant tank that can move up and down with the undulating waves and a cylinder-type compressed air generating mechanism connected with the buoyant tank. The compressed air generating mechanism includes: a cylinder body that can move up and down with the buoyancy tank and a relatively fixed vertical rod, the vertical rod is installed vertically, and the vertical rod and the cylinder body enclose at least one airtight air Each airtight chamber is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet check valve, the air outlet is provided with an air outlet check valve, and the vertical rod is provided with a The air inlet hole communicates with the atmosphere and the air outlet hole sends compressed air out, the air inlet hole communicates with the air inlet of the airtight chamber, the air outlet hole communicates with the air outlet, and the cylinder body communicates with the air inlet. The buoyant tank is fixedly connected, and the up and down motion of the buoyant tank with the undulation of the waves can drive the cylinder body to move up and down relative to the vertical rod so as to convert the energy generated by the undulating waves into compressed air.

Based on the above inventive concepts, two specific embodiments of the wave energy conversion device are obtained. The first embodiment can realize the function of one-way compressed air, and the second embodiment can realize the function of two-way compressed air.

Wherein, the specific structure of the first embodiment is as follows: the lower end of the vertical rod and the cylinder block enclose the airtight air chamber, the air inlet and the air outlet are all arranged on the lower end surface of the vertical rod, The downward movement of the floating tank with the undulations of the waves can drive the cylinder body to move downward relative to the vertical rod to open the air intake check valve of the airtight chamber to suck air into the airtight chamber. The upward movement of the buoy box with the undulations of the waves can drive the cylinder body to move upward relative to the vertical rod to compress the air in the airtight chamber and open the air outlet check valve of the airtight chamber to send the compressed air out.

Further, the cylinder body is in the shape of a hollow cylinder with an open upper end, the upright rod is in the shape of a closed hollow cylinder, the upright rod is inserted into the cylinder body from top to bottom, and the buoyancy tank is fixed or integrated It is molded and sleeved on the outer wall of the cylinder body.

Further, the vertical rod protrudes upwards from the cylinder body, and the outer wall part of the vertical rod protruding from the cylinder body is also covered with a waterproof flexible sleeve, one end of the waterproof flexible sleeve is sealed and connected with the outer wall of the vertical rod, and the waterproof flexible sleeve The other end of the buoyancy tank is sealed and connected with the top wall of the buoyancy tank, and the inner cavity of the waterproof flexible sleeve is communicated with the atmosphere through a pipe.

Further, a fixing piece protruding outward from the vertical pole along the radial direction of the vertical pole is fixed on the outer wall of the vertical pole extending out of the cylinder, and one end of the waterproof flexible sleeve is fixed on the fixing piece.

Further, the top of the buoyancy tank is fixed with an upper limit block that limits the maximum drop height of the cylinder, and the cross section of the upper limit block is in a Z shape with the top end bent inward and the bottom end bent outward, and The top of the upper limit plate is located on the fixing piece.

Further, the bottom of the pole is fixed with a lower limit block that limits the maximum floating height of the cylinder.

Further, a sealing ring is sheathed on the outer wall of the lower end of the vertical rod, and the sealing ring is located between the vertical rod and the cylinder to isolate the airtight air chamber.

Further, a positioning ring is provided on the inner wall of the upper end of the cylinder, the positioning ring is located between the vertical rod and the cylinder, and the positioning ring is provided with a vent hole so that the cylinder and the vertical The cavity between the rods communicates with the inner cavity of the waterproof flexible sleeve.

Wherein, the specific structure of the second embodiment is as follows: the side wall of the vertical rod is provided with a radially protruding piston, and the piston, the cylinder and the vertical rod enclose an upper and a lower two The airtight air chambers, the air inlets and air outlets of each airtight air chamber are all arranged on the pistons, and the buoyant tank moves downwards with the undulations of the waves, which can drive the cylinder body to move downwards relative to the vertical rods. Open the air intake check valve of the lower airtight chamber to suck air into the lower airtight chamber, compress the air in the upper airtight chamber simultaneously and open the air outlet check valve of the upper airtight chamber to The compressed air is sent out, and the upward movement of the buoyant tank with the undulations of the waves can drive the cylinder body to move upward relative to the vertical rod to open the intake check valve of the upper airtight chamber to suck air into the upper airtight chamber During and at the same time compress the air in the lower airtight chamber and open the air outlet check valve of the lower airtight chamber to send the compressed air out.

Further, the cylinder body is in the shape of a hollow cylinder with upper and lower openings, and the vertical rod is in the shape of a closed hollow cylinder. The vertical rod is inserted into the cylinder body from top to bottom, and the buoyancy tank is fixed or It is integrally sleeved on the outer wall of the cylinder body, the inner diameter of the cylinder body is larger than the outer diameter of the vertical rod, and a sealing plate is provided at the upper end and the lower end of the cylinder body to close the vertical rod and the space between the cylinder body form the upper airtight chamber and the lower airtight chamber.

Further, a sealing ring is provided at the position where the sealing plate is in contact with the vertical rod.

Further, the vertical rod protrudes downwards from the cylinder body, and a sealing cylinder set outside the vertical rod protrudes downward from the bottom of the cylinder body, and the sealing cylinder and the vertical rod The rods are enclosed to form a closed cavity.

Further, the vertical rod protrudes upwards from the cylinder body, and a waterproof flexible sleeve is sheathed on the outer wall of the vertical rod extending out of the cylinder body, one end of the waterproof flexible sleeve is sealed and connected with the outer wall of the vertical rod, and the waterproof flexible sleeve The other end is in sealing connection with the top of the cylinder body, and the inside of the waterproof flexible sleeve communicates with the atmosphere through a pipe.

Further, on the outer wall of the vertical rod protruding upwards from the cylinder body, a fixing member protruding outward along the radial direction of the vertical rod is fixed, and one end of the waterproof flexible sleeve is connected to the fixing member.

Further, the closed cavity is communicated with the atmosphere through a pipeline, or an air inlet and an air outlet are provided on the lower end surface of the vertical rod, and an air inlet check valve and an air outlet check valve are respectively installed at the positions of the air inlet and the air outlet. .

In order to solve the above-mentioned second technical problem, the present invention provides a wave energy conversion system, which includes: at least one above-mentioned wave energy conversion device, a column installed vertically and fixed in waves, and at least one fixed arm, so One end of the fixed arm is fixed on the column, and the other end is fixedly connected to the column in the wave energy conversion device.

Further, the wave energy conversion system further includes a lifting seat that is movable up and down on the column, and the fixed arm cooperates with the column through the lifting seat.

Further, the inner sleeve of the lifting seat is provided with a damping sliding sleeve that can slide up and down with resistance on the outer wall of the column.

Further, the fixed arms are distributed horizontally and symmetrically around the upright around the upright with the upright as the center.

Further, there is a hollow air storage cavity inside the column, which is connected with the air outlets of each wave energy conversion device to collect compressed air.

Further, the wave energy conversion system also includes an air motor fixed on the column and connected with the air storage chamber.

Further, the wave energy conversion system also includes a generator connected with the air motor.

The beneficial effect of the present invention is that the wave energy conversion device of the present invention drives the cylinder body to move up and down relative to the vertical rod through the up and down movement of the buoyant tank with the ups and downs of the waves, thereby converting the energy generated by the ups and downs of waves into compressed air, and then successfully converting green, The conversion of clean, zero-pollution-emission renewable energy into energy available for human use is of great significance to social development. In addition, the wave energy conversion device also has the advantages of simple structure, low cost, good corrosion resistance, and high work efficiency. Advantages, suitable for popular applications. The wave energy conversion system of the present invention arranges a plurality of wave energy conversion devices on a column to centrally utilize the compressed air generated by each wave energy conversion device to further convert it into mechanical energy or electrical energy, which is more suitable for offshore, Shallow seas and bays and other sea areas with low ocean currents have the advantages of simple structure, low cost, good corrosion resistance, high reliability, and high work efficiency.

Description of drawings

Fig. 1 is a schematic structural diagram of a wave energy conversion device according to a first embodiment of the present invention.

Fig. 2 is a working principle diagram of the wave energy conversion device of the first embodiment in the low water level state and the high water level state (I in the figure is the low water level state, and II is the high water level state).

Fig. 3 is a schematic structural diagram of a wave energy conversion device according to a second embodiment of the present invention. the

Fig. 4 is a diagram of the working principle of the wave energy conversion device of the second embodiment in the low water level and high water level states (in the figure, I is the normal water level state, II is the low water level state, and III is the high water level state).

Fig. 5 is a side view of the wave energy conversion system.

Fig. 6 is a top view of the wave energy conversion system.

Fig. 7 is a schematic structural diagram of the pneumatic motor in the wave energy conversion system.

Detailed ways

In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

Referring to Fig. 1 , it is a structural schematic view of the first embodiment of the wave energy conversion device, which includes: a buoyant tank 31 that can move up and down with the undulating waves and a cylinder-type compressed air generating mechanism connected with the buoyant tank 31 . The compressed air generating mechanism includes: a cylinder body 32 that can move up and down with the buoyancy tank 31 and a relatively fixed vertical rod 33 . Cylinder body 32 is the hollow cylindrical shape of upper end opening, and vertical rod 33 is the hollow cylindrical shape of upper and lower ends closure, and vertical rod 33 is installed vertically, and its upper end is fixed, and is inserted in the cylinder body 32 from top to bottom. The lower end of the vertical rod 33 and the cylinder body 32 enclose a closed air chamber 321, and when the cylinder body 32 moved up and down with the buoyant tank, the lower end of the vertical rod 33 would act as a piston to compress the air in the airtight air chamber 321. The airtight chamber 321 is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet check valve 3212, the air outlet is provided with an air outlet check valve 3211, and the top of the vertical rod 33 is provided with an inlet connected to the atmosphere. Air hole 334 and the air outlet hole 333 that compressed air is sent out, air inlet 334 communicates with the air inlet of airtight chamber 321 by pipeline 335 , air outlet 333 communicates with the air outlet of airtight chamber 321 by pipeline 337 . The buoyancy tank 31 is fixedly or integratedly sleeved on the outer wall of the cylinder body 32 to drive the cylinder body 32 to move up and down relative to the vertical rod 33 through the up and down movement of the buoyancy tank 31 following the undulations of the waves, and convert the energy generated by the undulations into compression Air.

The vertical rod 33 extends upwards from the cylinder body 32, and a waterproof flexible sleeve 34 is sleeved on the outer wall part of the vertical rod 33 extending out of the cylinder body 32. The upper end of the waterproof flexible sleeve 34 is sealed and connected to the outer wall of the vertical rod 33, and the lower end is connected to the buoyancy tank. The top wall of 31 is sealed and connected to prevent seawater from rising above the buoyancy tank 31 and corroding the contact position when the vertical rod 33 slides up and down relative to the cylinder body 32. The interior of the waterproof flexible cover 34 is also communicated with the atmosphere through a pipe 336, thereby reducing the upward movement resistance of the buoyancy tank 31 and the cylinder body 32.

A fixing member 341 protruding radially from the vertical rod 33 is fixed on the outer wall of the vertical rod 33 protruding from the cylinder body 32 , and the upper end of the waterproof flexible sleeve 34 is connected to the vertical rod 33 through the fixing member 341 . The top of the buoyancy tank 31 is fixed with an upper limit block 35 that limits the maximum drop height of the cylinder body 32. The cross section of the upper limit block 35 is in a zigzag shape with the top bent inward and the bottom bent outward. Above, when the buoyant tank 31 fell to the lowest position, the top of the upper limit block 35 was stopped by the fixture 34 to limit the cylinder body 32 from falling further, and the bent part of the bottom end was fixedly connected with the buoyant tank 31 top as a fixed structure. The bottom of the vertical rod 33 is fixed with the lower limit block 36 that limits the maximum floating height of the cylinder body 32. When the buoyant tank 31 rose to the highest position, the bottom end of the cylinder body 32 abuts against the lower limit block 35, thereby preventing it from rising further.

There is an appropriate gap cavity between the cylinder body 32 and the side wall of the vertical rod 33, for the vertical rod 33 to slide up and down, and a sealing ring 37 is sleeved on the outer wall of the vertical rod 33 lower end. The airtight chamber 321 is isolated in the gap between the cylinder blocks 32 to prevent air leakage from the airtight chamber 321 and reduce the efficiency of air compression. On the inner wall of the upper end of the cylinder body 32, a positioning ring 38 is arranged. The positioning ring 38 is also located in the gap between the vertical rod 33 and the cylinder body 32. It mainly plays the role of positioning and guiding the vertical rod 33. In addition, the positioning ring 38 A vent hole is provided so that the cavity between the cylinder body 32 and the upright rod 33 communicates with the inner cavity of the waterproof flexible sleeve 34 .

Fig. 2 is a working principle diagram of the above-mentioned wave energy conversion device under low water level and high water level respectively. As shown in state I, when the sea level 8 is at a low water level, the buoyancy tank 31 moves downward with the undulation of the waves, thereby driving the cylinder The body 32 moves downward relative to the vertical rod 33. At this time, the volume of the airtight air chamber 321 increases, the intake check valve 332 is opened, and the outside air enters the airtight air chamber 321 through the pipeline 335; as shown in state II, when the sea When the plane 8 is at a high water level, the floating tank 31 moves upwards with the undulations of the waves, thereby driving the cylinder body 32 to move upwards relative to the vertical rod 33, the air in the airtight air chamber 321 is compressed, and the air outlet check valve 331 is pushed open by the compressed air, thereby The compressed air is sent out through the pipeline 337 to complete an air compression process. Such reciprocating work realizes the conversion of wave energy into compressed air.

Fig. 3 is the structure diagram of the second embodiment of the wave energy conversion device, as shown in the figure, the wave energy conversion device also includes: a buoyancy tank 31 and a cylinder type compressed air generating mechanism connected with the buoyancy tank 31, the compression The air generating mechanism also includes: a cylinder body 32 that can move up and down with the buoyancy tank and a relatively fixed vertical rod 33 . The structure of the upright rod 33 is the same as the above-mentioned embodiment, and the difference from the above-mentioned embodiment is: in this embodiment, the cylinder body 32 is a hollow cylindrical shape with upper and lower openings, and the upright rod 33 is inserted in the cylinder body 32 from top to bottom And both ends extend out of the cylinder body 32 , and the buoyancy tank 31 is fixedly or integratedly sleeved on the outer wall of the cylinder body 32 . The inner diameter of the cylinder body 32 is greater than the outer diameter of the vertical rod 33, and the upper and lower ends of the cylinder body 32 are respectively provided with a sealing plate 324, and a sealing ring 37 is arranged at the position where the sealing plate 324 contacts the vertical rod 33, so that the inner wall of the cylinder body 32 An airtight air chamber is enclosed between the outer wall of the vertical rod 33 . The side wall of the vertical rod 33 is provided with a radially outwardly protruding piston 38, which separates the airtight chamber between the cylinder body 32 and the vertical rod 33 into upper and lower two airtight chambers 322, 323. . Each airtight chamber 322 , 323 is provided with an air inlet and an air outlet, and the air inlet and air outlet of each airtight chamber 322 , 323 are both arranged on the piston 38 . The air inlet of the upper airtight chamber 322 is provided with an air inlet check valve 3222, and the air outlet is provided with an air outlet check valve 3221; the air inlet of the lower air chamber 323 is provided with an air inlet check valve 3232, An air outlet check valve 3231 is provided at the air outlet. The top of vertical bar 33 is provided with the air inlet 334 that communicates with atmosphere and the air outlet 333 that compressed air is sent out, and air inlet 334 is communicated with the air inlet of upper and lower airtight chamber 322,323 by pipeline 335, and air outlet 333 communicates with the air outlets of the upper and lower airtight chambers 322, 323 through the pipeline 337.

Upright rod 33 stretches out cylinder body 32 upwards, and a waterproof flexible cover 34 is sheathed in the outer wall part that vertical rod 33 stretches out cylinder body 32, and vertical rod 33 stretches out on the outer wall of cylinder body 32 and is fixed with along vertical rod 33 radial direction Extended fixture 341, the upper end of waterproof flexible cover 34 is sealed and connected with the outer wall of vertical rod 33 by fixed piece 341, and the lower end of waterproof flexible cover 34 is connected with the top wall of sealing plate 324 sealingly, with vertical rod 33 and cylinder body Form seal between 32, prevent seawater from rising above the buoyancy tank 31 and corrode the contact position when vertical rod 33 slides up and down relative to cylinder body 32. The inside of the waterproof flexible cover 34 communicates with the atmosphere through a pipe 336, thereby reducing the resistance of the buoyancy tank 31 and the cylinder body 32 moving upwards with the undulations of the waves.

The lower end of the vertical rod 33 protrudes from the cylinder body 32. In order to prevent the lower end of the vertical rod 33 from being corroded by seawater, a sealing cylinder 325 protruding downwards from the bottom of the cylinder body 32 in this embodiment is arranged on the vertical cylinder 325. The outside of the rod 33 is fixed together with the sealing plate 324 at the bottom of the cylinder body 32 . The vertical rod 33 and the sealing cylinder 325 enclose a closed cavity 3251. In order to reduce the movement resistance caused by the air compression in the closed cavity 3251 to the vertical rod 33, the closed cavity 3251 needs to be communicated with the atmosphere through a pipeline.

Fig. 4 is a diagram of the working principle of the wave energy conversion device under normal water level, low water level and high water level respectively. As shown in state I, when the sea level 8 is at normal water level, the piston 38 is roughly in the middle of the cylinder 32 , the air in the upper and lower airtight chambers 322, 323 is basically equal to the atmospheric pressure, so the intake check valves 3222, 3232 and the air outlet check valves 3221, 3231 in the upper and lower airtight chambers 322, 323 are all in a closed state ; As shown in state II, when the sea level 8 is at a low water level, the buoyancy tank 31 moves downward with the undulations of the waves, thereby driving the cylinder body 32 to move downward relative to the vertical rod 33, and the air intake check valve of the lower airtight chamber 323 3232 is opened to suck air into the lower airtight chamber 323, at the same time, compress the air in the upper airtight chamber 322, and open the air outlet check valve 3221 of the upper airtight chamber 322 to send the compressed air out to complete an air compression Process; as shown in state III, when the sea level 8 is at a high water level, the buoyancy tank 31 moves upward with the undulations of the waves, thereby driving the cylinder body 32 to move upward relative to the vertical rod 33, and opening the air intake one-way of the upper airtight air chamber 322 The valve 3222 sucks air into the upper airtight chamber 322, and simultaneously compresses the air in the lower airtight chamber 323, opens the air outlet check valve 3231 of the lower airtight chamber 323, and sends out the compressed air, completing two air compression processes. Such reciprocating work realizes the conversion of wave energy into compressed air.

According to the inventive concepts of the above two embodiments, in other embodiments, the wave energy conversion device of the present invention can also form three or more airtight chambers between the vertical rod 33 and the cylinder body 32, so that the vertical rod 33 It moves up and down relative to the cylinder body 32 to compress each sealed air chamber to generate compressed air. Such as: set air inlet and air outlet on the lower end face of the vertical rod 33 of the above-mentioned second embodiment, install air inlet check valve and air outlet check valve respectively on the air inlet and the air outlet, make the air inlet and the atmosphere Connected, the air outlet communicates with the air outlet hole 333 on the upper end of the vertical rod 33, so that the closed cavity 3251 between the vertical rod 33 and the sealing cylinder 325 becomes the third airtight chamber, and the third airtight chamber generates compression The working principle of the air is the same as that of the first embodiment, and will not be repeated here.

Fig. 5 is a schematic structural diagram of a system for converting wave energy into electrical energy, the system comprising: a column 1 vertically installed and fixed in the seabed 9, at least one above-mentioned wave energy conversion device 3 fixed on the column 1, at least one A fixed arm 2 for fixing the wave energy conversion device 3, a pneumatic motor 4 for converting compressed air into mechanical energy output, and a generator 5 for converting mechanical energy into electrical energy.

Referring to Fig. 6, the fixed arm 2 is distributed horizontally and symmetrically around the column 1 in a scattered manner centered on the column 1, one end of which is fixed on the column 1, and the other end is fixed to the column 33 of one of the wave energy conversion devices 33 connect. An elevating base 11 that can move up and down relative to the upright column 1 is provided on the column 1 , and the fixed arm 2 cooperates with the upright column 2 through the elevating base 11 . The lifting seat 11 can be adjusted up and down appropriately with the change of the height of the sea level 8. When the sea water is in high tide, the lifting seat 11 will rise appropriately. working water level. The lifting seat 11 here can be driven by any device in the prior art that can move up and down relative to the column 1. The simplest and most practical way is to set a resistance on the outer wall of the column 1 in the lifting seat 11. The damping sleeve that slides up and down.

The column 1 is preferably set as a hollow structure, and the cavity inside it can be used as an air storage tank, and the air storage tank is connected with the air outlet pipes of each wave energy conversion device 3 through a pipeline 12, so as to collect the compressed air sent by each wave energy conversion device 3 , and an air intake check valve 13 is also provided at the position where the air storage chamber is connected to the pipeline 12 to prevent the compressed air in the air storage tank from flowing back. The air storage tank is connected with the air motor 4 to convert the compressed air into mechanical energy. As shown in Figure 7, the pneumatic motor 4 includes: a casing 41, a plurality of fan blades 42 installed in the casing, and an output shaft 43 connected to all the fan blades 4, the compressed air enters the casing from the air storage chamber Inside 41, the fan blade 42 is driven to rotate, and the fan blade drives the output shaft 43 to rotate, so that the output mechanical energy drives the generator 5 to generate electricity. The specific structural description of the air motor 4 here is just an example, and it is not limited to this in actual use. Both the air motor 4 and the generator 5 can adopt structures commonly used in the prior art.

Both the air motor 4 and the generator 5 of the wave energy conversion system are installed on the column 1 to reduce the conveying distance of compressed air, reduce air loss and improve power generation efficiency.

It is worth mentioning that the present invention can also fix a wind power generation device located above the sea level above the column 1, so as to rationally utilize shared resources, make one column 1 meet various usage requirements, and reduce the construction cost.

Obviously, in other embodiments, the above-mentioned air motor 4 and/or generator 5 can also be removed from the wave energy conversion system, so as to convert wave energy into compressed air, or convert wave energy into mechanical energy.

However, the above descriptions are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent structural changes made by using the description and drawings of the present invention are included in the protection scope of the present invention. Inside.

Claims (23)

1. a Wave energy converting device, it is characterized in that, comprise: one can rise and fall on the waves and the buoyancy tank of knee-action and the pressurized air of a cylinder type being connected with described buoyancy tank generation mechanism, described pressurized air produces mechanism and comprises: a cylinder body that can move up and down with buoyancy tank and a relatively-stationary vertical rod, described vertical rod is vertically to install, described vertical rod is plugged in described cylinder body from top to bottom, described vertical rod protrudes upward cylinder body, and the outer wall section that cylinder body is stretched out in vertical rod is also arranged with water proof flexible cover, described vertical rod and described cylinder body surround at least one sealed gas chamber, each sealed gas chamber is equipped with suction port and air outlet, described suction port place is provided with breather check valve, place, described air outlet is provided with outgassing nonreturn valve, described vertical rod is the hollow tube-shape of sealing, in described vertical rod, be provided with the suction tude being communicated with atmosphere and the steam outlet pipe that pressurized air is sent, described suction tude is communicated with the suction port of described sealed gas chamber, described steam outlet pipe is communicated with described air outlet, described cylinder body is fixedly connected with described buoyancy tank, described buoyancy tank rise and fall on the waves and knee-action can to drive the relatively described vertical rod knee-action of described cylinder body to take the Conversion of Energy that heaving of the sea is produced be pressurized air.

2. Wave energy converting device as claimed in claim 1, it is characterized in that, the lower end of described vertical rod and described cylinder body surround the sealed gas chamber described in, described suction port and air outlet are all arranged on the lower end surface of vertical rod, described buoyancy tank rise and fall on the waves that downward action can drive the relatively described vertical rod of described cylinder body action downwards and the breather check valve of opening described sealed gas chamber with by sealed gas chamber described in air intake, the upwards action that rises and fall on the waves of described buoyancy tank can drive upwards action and the outgassing nonreturn valve that compresses the air in described sealed gas chamber and open described sealed gas chamber is sent pressurized air of the relatively described vertical rod of described cylinder body.

3. Wave energy converting device as claimed in claim 2, is characterized in that, described cylinder body is the hollow tube-shape of upper end open, and described buoyancy tank is fixed or one-body molded being set on the outer wall of described cylinder body.

4. Wave energy converting device as claimed in claim 1, it is characterized in that, one end and the vertical rod outer wall of described water proof flexible cover are tightly connected, and the other end of described water proof flexible cover and the roof of described buoyancy tank are tightly connected, and the inner chamber of described water proof flexible cover is communicated with atmosphere by a pipeline.

5. Wave energy converting device as claimed in claim 4, is characterized in that, stretches out on the outer wall of cylinder body be fixed with the fixed block that stretches out vertical rod along vertical rod radially outward in vertical rod, and one end of described water proof flexible cover is fixed on described fixed block.

6. Wave energy converting device as claimed in claim 5, it is characterized in that, the top of described buoyancy tank is fixed with the upper limit position block of the maximum height of drop of the described cylinder body of restriction, the cross section of described upper limit position block is that top bends inwards, the zigzag of bottom outward, and the top of upper limit plate is positioned on described fixed block.

7. Wave energy converting device as claimed in claim 3, is characterized in that, the bottom of described vertical rod is fixed with the lower position block of the maximum floating height of the described cylinder body of restriction.

8. Wave energy converting device as claimed in claim 3, is characterized in that, on the outer wall of described vertical rod lower end, is arranged with seal ring, seal ring between described vertical rod and described cylinder body to completely cut off described sealed gas chamber.

9. Wave energy converting device as claimed in claim 4, it is characterized in that, on the inwall of described cylinder body upper end, be provided with positioning ring, positioning ring, between described vertical rod and described cylinder body, and is provided with vent on positioning ring so that the inner chamber of the cavity between described cylinder body and described vertical rod and water proof flexible cover is communicated with.

10. Wave energy converting device as claimed in claim 1, it is characterized in that, the sidewall of described vertical rod is provided with the piston of protrusion radially, described piston, described cylinder body and described vertical rod surround, lower two described sealed gas chambers, the suction port of each sealed gas chamber and air outlet are all arranged on described piston, described buoyancy tank rise and fall on the waves that downward action can drive the relatively described vertical rod of described cylinder body action downwards and the breather check valve of opening described lower sealed gas chamber with will be described in air intake in lower sealed gas chamber, the outgassing nonreturn valve that compresses the air in described upper sealed gas chamber simultaneously and open described upper sealed gas chamber is sent pressurized air, described buoyancy tank rise and fall on the waves upwards action can drive the relatively described vertical rod of described cylinder body upwards action and the breather check valve of opening described upper sealed gas chamber with by upper sealed gas chamber described in air intake, the outgassing nonreturn valve that compresses the air in described lower sealed gas chamber simultaneously and open described lower sealed gas chamber is sent pressurized air.

11. Wave energy converting devices as claimed in claim 10, it is characterized in that, described cylinder body goes to upper and lower the hollow tube-shape of opening, described buoyancy tank is fixed or one-body molded being set on the outer wall of described cylinder body, the internal diameter of described cylinder body is greater than the external diameter of described vertical rod, and the top and bottom of described cylinder body respectively arrange a shrouding with seal space between described vertical rod and described cylinder body form described on sealed gas chamber and described lower sealed gas chamber.

12. Wave energy converting devices as claimed in claim 11, is characterized in that, at described shrouding, are provided with seal ring with the position that described vertical rod contacts.

13. Wave energy converting devices as claimed in claim 11, it is characterized in that, described cylinder body is stretched out in described vertical rod downwards, and in the bottom of described cylinder body, protrudes downwards and be provided with a sealing drum that is set in described vertical rod outside, and described sealing drum and described vertical rod are encircled into an enclosed cavity.

14. Wave energy converting devices as claimed in claim 10, it is characterized in that, one end and the vertical rod outer wall of described water proof flexible cover are tightly connected, and the other end of described water proof flexible cover is connected with the top seal of described cylinder body, and the inside of described water proof flexible cover is communicated with atmosphere by a pipeline.

15. Wave energy converting devices as claimed in claim 14, is characterized in that, protrude upward on the outer wall of cylinder body be fixed with the fixed block that stretches out vertical rod along vertical rod radially outward in described vertical rod, and one end of described water proof flexible cover is connected with described fixed block.

16. Wave energy converting devices as claimed in claim 13, it is characterized in that, described enclosed cavity is communicated with atmosphere by pipeline, or, on vertical rod lower end surface, offer suction port and air outlet, at suction port and position, air outlet, breather check valve and outgassing nonreturn valve are installed respectively.

17. 1 kinds of Wave energy conversion systems, it is characterized in that, comprise: at least one Wave energy converting device as described in any one in claim 1-16, one is vertically mounted and fixed on the column in wave, and, at least one fixed arm, one end of described fixed arm is fixed on described column, the other end is fixedly connected with the vertical rod in Wave energy converting device described in one.

18. Wave energy conversion systems as claimed in claim 17, is characterized in that, described Wave energy conversion system also comprises that one can be arranged on the elevating bracket on described column up or down, and described fixed arm coordinates with described column by elevating bracket.

19. Wave energy conversion systems as claimed in claim 18, is characterized in that, in described elevating bracket, be arranged with one can be on described column outer wall the resistant damping sliding sleeve sliding up and down.

20. Wave energy conversion systems as claimed in claim 17, is characterized in that, described fixed arm is dispersion shape level, is distributed in symmetrically the surrounding of described column centered by described column.

21. Wave energy conversion systems as claimed in claim 17, is characterized in that, have hollow air storing cavity in described column, and it is connected to collect pressurized air with the air outlet hole of each Wave energy converting device.

22. Wave energy conversion systems as claimed in claim 21, is characterized in that, described Wave energy conversion system also comprises that one is fixed on column and the pneumatic motor being connected with described air storing cavity.

23. Wave energy conversion systems as claimed in claim 22, is characterized in that, described Wave energy conversion system also comprises a generator being connected with described pneumatic motor.